Textile yarn clearer



Oct. 13, 1953 R. J. KENNEDY 2,654,938

TEXTILE YARN CLEARER Filed Aug. 25, 1951 2 Sheets-Sheet 1 mmunnumuumm Invenior By CW Attorney Oct. 13, 1953 R. J. KENNEDY TEXTILE YARN CLEARER 2Sheets-Sheet 2 Filed Aug. 25, 1951 Inventor MAM B Attorney Patented Oct.13, 1953 a TEXTIL YARN CLEARER Robert JohnKennedy, Heaton, Bradford,

. England Application August 23, 1951', Serial No. 243,304 In GreatBritain March 17, 1949 ship to a co-acting rod or the like over whichyarn passes are adapted to allow clear or perfect yarn to pass, but anyslubs or projecting imperfections are either swept off by the comb orthe latter acts to break the yarn and stop delivery. In practice,however. fromtime to time according to the nature of the yarn beingprocessed, the comb has to be pivotally moved forward in order that theteeth of the comb may be cleansed of adhering fly and foreign matter andwhilst the comb is in an inoperative position faulty yarn may passwithout any clearing action taking place. Furthermore, it sometimeshappens that by accident or design the comb is slightly propped openallowing the yarn to run through without obstruction, thus permittingslubs and the like to pass. Or in some instances it is found that eitherby accident or design the yarn is arranged to by-pass the clearerscompletely, all of which result in the production of inferior yarn whichis attended by much trouble in subsequent process- 1 ing or weavingoperations.

According to the present invention textile-yarn clearers utilise a pairof clearing devices which are pivotally arranged in spaced relationshipto each other and to a relatively stationary concave bar or memberwhereby both devices normally operate to clear a passing thread or yarnof slubs or similar imperfections but which upon being moved forward inorder to clean the front device enable the rear clearer to stillfunction.

In order that the invention may be fully and clearly comprehended thesame will now be described with reference to the accompanying drawings,in which:

Figure 1 is a front view of a yarn clearer constructed according to theinvention.

Figure 2 is an enlarged front elevation of the improved yarn clearer,removed from its co-acting guide plate.

Figure 3 is a rear view of Figure 2, and Figure 4 is a side elevationviewed from the left of Figure 3.

I is a bracket at right angles to which is secured a bar 2 whose upperface is concave with a radius more or less corresponding with the swing'11 Claims. (01. 28-64) or arcuate movement of plate 3 mounted upon apivot screw 4 also secured to bracket I.

Attached to the plate 3 by an adjusting screw 5 is a comb 6 havingforwardly inclined teeth, said comb being capable of adjustment relativeto the bar! against the pressure exerted by a blade spring I.

Also secured to the plate 3 is a rearwardly inclined blade member 8whose securing screws 9 may be utilised for adjusting said blade 8relative to the bar 2.

A torsion spring l0 upon the pivot screw 4 serves to maintain pressureupon plate 3 and to retain the latter, the comb 6 and the blade 8 in thenormal operative position clearly shown in the drawings, the amount ofarcuate movement or swing of said plate being limited by a stop orprojection ll upon the plate 3 which operates within an arcuate slot I2associated with the bracket l.

. I3 is a hardened steel, tungsten-carbide or similar cylindrical membersecured to the bracket I to resist wear of the passing thread or yarn,and I4 is a vertical plate adjustably secured to the concave bar 2. 7

l5 and I 8 are detachable guards or dust covers.

The yarn clearer device herein described is preferably secured to athread guide I! which is in turn adapted to be secured to a suitabletextile machine in an appropriate position. This thread guide 11 takesthe form of an elongated plate having a curved upper edge whichgradually rises to a maximum height above the bracket I and which thencurves downwardly towards the outer extremity of the comb 6. The part ofsaid plate ll which registers with the comb and member I 3 has anopening l8 formed in it and a gap [9 affords access to the opening.

In practice, the comb 6 and blade 8 or plate 14 are vertically adjustedrelative to the concave bar 2, so that a predetermined space is providedbetween the comb and blade and the bar 2, according to the type of yarnbeing processed. Yarn then passes over the bar 2 and members 13 and I4,beneath the comb and blade whereupon the latter members effect a doubleclearing action. When it becomes necessary to move the comb forward awayfrom the bar in order to rid the teeth of fly or foreign matter (asshown in broken lines in Figure 4 of the drawings) the rear blade 8simultaneously moves forward but continues in the same or inapproximately the same spaced relationship relative to the bar, thuscontinuing to act as a clearer for the passing yarn. Following thecleansing of the comb the latter and the blade automatically return totheir normal posi- 3 tions realtive to the bar by virtue of the torsionspring It).

It will readily be observed that the shape of the thread guide plate I!ensures that at all times the thread or yarn must pass through theopening 18 and hence through the clearers. If any attempt is made toby-pass the clearer the thread immediately rides over thecurvedfsurface's of the plate I! and again enters the clearers via thegap IS in the plate.

Having described the invention, what is claimed is:

1. A textile clearer of the class described in eluding a supportingbracket, a bar having a concave face connected to said bracket and overwhich the yarn passes, a member pivots-11y connected to said bracketabove said concave face, said member having spaced front and rearclearing means to clear a passing thread of'slubs oi imperfections, saidmeans being simultaneously operabie and positioned a predetermineddistance above said concave face so that when the front clearing meansis moved away from the concave face the rear clearing means continues topre-- vent passage of faulty yarn.

2. A textile yarn clearer or the class described including a supportingbracket, a bar having a concave face connected to said bracket and overwhich the yarn passes, a member pivotally con nected to said bracketabove said bar, said memher having spaced front and rear arms, a combconnected to said front arm, a blade connected to said rear arm, saidcoinb and blade being spaced above said concave face a predetermineddistance, and said blade when the bar is swung outwardly to be cleaned,continuing to be positioned above the concave face so as to preventpassage of faulty yarn.

3. A textile yarn clearer as called for in claim 1 in which means areprovided for varying the distance the front and rear clearing means arepositioned 'above said concave face.

'4. A textile yarn clearer as called for in claim 2 including means foradjustably connecting the comb to said member, and means for adjustablyconnecting the blade to said member. v '5. A textile yarn clearer ascalled for in claim 2 in which yieldable means are provided formaintaining the comb and blade in their normal operative position abovesaid concave face.

'6. A textile yarn clearer as called for in claim 2111 which stop meansare provided to limit the outwardly swinging movement of said member.

7. A textile yam clearer as called for in claim 2 including awear-resistant member positioned adjacent said concave face, and meansfor varying the distance between said comb and said concave face.

8, A textile yarn clearer as called for in claim 1 including a threadguide plate connected to said bracket and provided with means forinsuring the yarn passing at all times between said bar and said member.

9. A textile yarn clearer of the class described including an anglebracket, a bar having an upper concave-face, means adjustably connectingthe bar to said bracket, a member pivotally connected to said bracketabove said bar, said member having a front arm and a spaced rear arm, acomb connected to said front arm and having forwardly inclined teeth, ablade connected to said rear arm, said comb and said blade being spacedabove said concave face a predetermined distance, yieldable means fornormally maintaining the comb and blade in opera tive position relativeto said bar, and means for limiting the outwardly swinging movement ofsaid member relative to said bar so that when the comb is moved awayfrom said concave face, the blade is simultaneously moved so as tocontinue to prevent the passage of faulty yarn through the clearer.

10. A textile yarn clearer as called for in claim '9 including a guideplate connected to said angle bracket, said guide plate having a curvedsur face and an opening communicated with the space between the comb andsaid bar so as to provide means for preventing the yarn by-pas'singtheclearing device.

11. A textile yarn clearer as called for in claim 1 including a guideplate connected to said bracket and provided with means for prevent ingthe yarn by-passing the clearing device.

ROBERT JOHN KENNEDY.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date $06,846 Marsden July '9, 1889 1,703,851 Davis Feb. 26, 19291,749,511 Sands Mar. 4, 1930 1,813,049 Hasbrouck r July '7, 19312,244,999 7 Malcolm et al. June '10, 1941

